I noticed that when shooting my RX1 (in M-Mode) that neither the larger histogram nor the small one (in the right lower corner of the LCD) really reflects the exposure adjustments I make in preparation of shooting When I like to "expose to the right" and therefore increase exposure, these increases are not really visible in either histogram: the histograms do not really change at all. Changing between Auto ISO and fixed ISO values doesn't make much of a difference. So far when during exposure the histogram indicates that exposure e.g. is too much to the left, I can not use the histogram to follow the effect of gradual exposure increases until clippings may occur. What mistake do I make?